Headmistress Mahoney

Headmistress Mahoney is in charge of the all-girls boarding school Pendlingtonton Academy.

When Steve, along with Roger is admitted by the trustees on a technicality in "Top of the Steve", she vows to get him kicked out. She informs him that he needs to win the athletic decathlon or be kicked out, but luckily their roommate Spitz discovers an addendum to the rules that he only needs to win any event at the school and they enter a battle of the bands. With the situation spinning out of control, Roger suddenly realizes and tells Steve that they're in a spinoff.

Should Steve win the Battle of the Bands, they will be forced to leave American Dad! forever. They try their best to lose, but find the writers are against them by putting no other bands in the contest. Attempting to make a run for it from the other girls and Headmistress who is now enthusiastic to keep him in the school, they avoid various tropes that could keep them in the story, but when they get trapped in an office, Roger gets an idea when he realizes the set is cheap, the writing is lazy and sees a Canadian flag outside and realizes they're in Vancouver. He directs Steve to singing a few notes from a Beatles song in order to bust the show's budget, and they quickly find themselves back home.

Headmistress Mahoney is voiced by Rachael MacFarlane.